/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.utils.datastructure;

import org.apache.iotdb.db.rescon.PrimitiveArrayManager;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;

import static org.apache.iotdb.db.rescon.PrimitiveArrayManager.ARRAY_SIZE;

public class TimBooleanTVList extends BooleanTVList implements TimSort {
    private long[][] sortedTimestamps;
    private long pivotTime;

    private boolean[][] sortedValues;
    private boolean pivotValue;

    @Override
    public void sort() {
        if (sortedTimestamps == null
                || sortedTimestamps.length < PrimitiveArrayManager.getArrayRowCount(rowCount)) {
            sortedTimestamps =
                    (long[][]) PrimitiveArrayManager.createDataListsByType(TSDataType.INT64, rowCount);
        }
        if (sortedValues == null
                || sortedValues.length < PrimitiveArrayManager.getArrayRowCount(rowCount)) {
            sortedValues =
                    (boolean[][]) PrimitiveArrayManager.createDataListsByType(TSDataType.BOOLEAN, rowCount);
        }
        if (!sorted) {
            sort(0, rowCount);
        }
        clearSortedValue();
        clearSortedTime();
        sorted = true;
    }

    @Override
    public void tim_set(int src, int dest) {
        set(src, dest);
    }

    @Override
    public void set(int src, int dest) {
        long srcT = getTime(src);
        boolean srcV = getBoolean(src);
        set(dest, srcT, srcV);
    }

    @Override
    public void setToSorted(int src, int dest) {
        sortedTimestamps[dest / ARRAY_SIZE][dest % ARRAY_SIZE] = getTime(src);
        sortedValues[dest / ARRAY_SIZE][dest % ARRAY_SIZE] = getBoolean(src);
    }

    @Override
    public void saveAsPivot(int pos) {
        pivotTime = getTime(pos);
        pivotValue = getBoolean(pos);
    }

    @Override
    public void setFromSorted(int src, int dest) {
        set(
                dest,
                sortedTimestamps[src / ARRAY_SIZE][src % ARRAY_SIZE],
                sortedValues[src / ARRAY_SIZE][src % ARRAY_SIZE]);
    }

    @Override
    public void setPivotTo(int pos) {
        set(pos, pivotTime, pivotValue);
    }

    @Override
    public void clearSortedTime() {
        if (sortedTimestamps != null) {
            sortedTimestamps = null;
        }
    }

    @Override
    public void clearSortedValue() {
        if (sortedValues != null) {
            sortedValues = null;
        }
    }

    @Override
    public int compare(int idx1, int idx2) {
        long t1 = getTime(idx1);
        long t2 = getTime(idx2);
        return Long.compare(t1, t2);
    }

    @Override
    public void reverseRange(int lo, int hi) {
        hi--;
        while (lo < hi) {
            long loT = getTime(lo);
            boolean loV = getBoolean(lo);
            long hiT = getTime(hi);
            boolean hiV = getBoolean(hi);
            set(lo++, hiT, hiV);
            set(hi--, loT, loV);
        }
    }

    @Override
    public void clear() {
        super.clear();
        clearSortedTime();
        clearSortedValue();
    }
}
